无可挑剔

无 = 一 + 𠂇 + 乚 : Mnemonic symbol: the philosopher Diogenes, who has nothing and wants nothing.

无 = 一 + 𠂇 + 乚 : Just inside the space station's entrance, Diogenes is annoyed by Willy Walrus, who's playing his flute. Diogenes just wants a peaceful time without being disturbed, so he cuts the flute into pieces with a pair of scissors, and threatens to beat Willy Walrus with a shovel should he annoy Diogenes again.

Mnemonic symbol: 無爲, wu2 wei2, the state of non-doing after having attained complete harmony with the Tao.

Willy Walrus (w) has attained Wu Wei (無) just inside the space station's entrance (Ø2), while from the outside it may seem like he is napping.

可 = 丁 + 口 : Karl Marx (k) is challenging his abilities (可) in the elevator's living room (e3). He tries to force a nail (丁) into a mandarin (口), just by using his head. On top of that he tries to do so one thousand times, in order to create a bed of nails (mnemonic symbol for 可).

可 = 丁 + 口 : Alternative mnemonic symbol: kebab, from the pronunciation "ke". Karl Marx (k) is preparing a kebab (mnemonic symbol for 可) in the elevator's living room (e3). He also skewers mandarins (口) on the long steel nails (丁) and will only allow (可) his guests to eat the rest of the kebab if they eat their mandarins first.

挑 = 兆 + 扌 : In front of the aorta (ao1) Mother Teresa (ti) is carrying two vultures (兆) on a toy claw (扌) used as shoulder stick (挑).

挑 = 兆 + 扌 : Mother Teresa (ti) is lying motionless inside of the aorta (ao3). The vultures (兆) want to know if she's already dead, so they poke (挑) her with a toy claw (扌).

剔 = 刂 + 易 : Mother Teresa (ti) is picking her teeth (剔) in front of the space station (Ø1) with a kitchen knife (刂). She got something stuck in her teeth but it should be easy (易) to remove since it is only a puzzle consisting of two pieces (易).